Sexual traumatism is widespread in case of loose maintenance of bulls on feedlots. When sexual activity appears, especially at the age of 7-10 months, when puberty causes aggression, they inflict various injuries on each other. In the back area, there are wounds and abrasions, injuries of the penis and prepuce, in the form of abrasions, wounds of the mucous membrane, ruptures of the persisting frenulum, ruptures of the rectum, etc.The task of veterinary specialists of farms is to create conditions under which traumatism will decrease. This is the formation of a herd of cattle, castration of bulls on fattening, etc. In view of the anatomical features of the structure of the genitals of bulls, castration of these animals is more often carried out in a bloody open way "on a cliff", which is sometimes complicated by bleeding from the stump of the spermatic cord. Therefore, improving the technique of surgery to prevent possible complications is an urgent area of research. The purpose of our work was to develop a method of torsion of the blood vessels of the spermatic cord during castration of bulls.The work was carried out in the conditions of the PSKHK "Alexandrovsky" of the Myasnikovsky district of the Rostov region. At the same time, three groups of bulls were formed and various methods of torsion of the blood vessels of the severn cord during castration of males were tested. In the course of the experiment, the advantages and disadvantages of various methods of surgery were revealed and, in our opinion, the optimal method of castration of bulls was proposed.When castrating bulls in an open way, the method of torsion of blood vessels proposed by us does not require additional fixation of the spermatic cords when they break, which simplifies the technique of surgery, reduces the likelihood of postoperative complications, reduces the time of the operation. Our proposed method is easily feasible in production conditions, facilitates the work of veterinary specialists during mass castration and does not cause complications in the form of bleeding from the stump of the hay rope, rupture of blood vessels and nerves above the place of twisting of the spermatic cord.